Diamond cutting and polishing machine.



1,018, Patented Deo. 8, 1908.

6 SHEETS-SHEET 1.

l A. HENIUS. DIAMOND CUTTING AND POLISHING MACHINE.

APPLICATION FILED OCT. 5, 1907.

Patented Dec. 8, 1908.

5 SHEETS-SEEET 3.

A. HBNIUS. DIAMOND DUTNNG AND POLISHING MACHINE.

4 APPLIOATIONVFILED 00125, 1907.

906,018. Patented Deo. 8, 1908.

BSHBETS-SHEBT 4.

A. HBINIUS. DIAMOND CUTTING AND POLISHING MACHINE. APPLIOA TION FILED 00T. 5., 1907.

` Patenti-ad Dec. 8, 1908 s BEEN-SHEET s.

www

AvvRTHURHENiUs,'orPRoviDENoa RHODE'YISLAND- l ,DIAMOND CUTTING AND lPoLisHiNe MACHINE.

No. 906,018.v i

Specication of Letters Patent.

Patented nec. s, 190e.v

Application led October 5, 1907 .e Serial o. 396,001. I

To all whom it may concern:

`Be it known that I, ARTHUR HENiUs, a citizen of the United States, residing at Providence, Providence county, yRhode lsland, have invented certain new and useful Improvements in Diamond Cutting and Polishing lMachines, of which the following is a full, clear, and exact description.

This invention relates to machines for cutting and polishing diamonds` automatically Among the objects of this invention are,- to provide improved means for holding the stone, and mechanism whereby different faces ofv the stone are successively presented to the action of the cutting and polishing .wheel, said mechanism .being automatic in its operation.

The construction and peration of the machine will vbe more readily understood by reference to the accompanying' drawings, illustrating the machine in the preferred form. However, minor changes may be made without departing from the scope of` `the invention.

Figurel is a view'in side elevation ofthe entire machine, one side showing al central Vsection thereof; Fig. 2 is a view in end elevation of the same; Fig. 3 is a top lan view of the same; Fig. 4 is an enlarge view in longitudinal section of the chuck-slide; Fig. 5 is a view in end projection of Fig. 4; Fi 6 is. an enlarged view 'of the chuck-holger, chuck-slide and related parts,` the chuckholder being in section; Fig. 7 is a sectional view taken on line :ce-x of Fig. 6, looking in 'the direction of the arrow; Fig. 8 is an enlarged plan view of the pawl wedge; Fig. 9 is an enlarged view in section, of the lower portion of the reversing arm.

The machine as shown is constructed to grind two stones at the Sametime, but as each cutting means is a duplicate of the other in construction and operation, it will be necessary only tovv describe one.

1 is the frame.

2 is the wheel shaft mounted in vertical bearings on the frame.

3 is the grinding or cuttin Wheel, secured to the u per end of the sha t 2. y

4 is aelt-pulley for driving theshaft.

. 5 isa sliding head mounted to reciprocate onthe'top of the frame 1.'

6 is a cam wheel secured to the shaft 2. 7 is a. cam'track on theupperv surface-of said wheel.

gaged by the post 27. y

comprisin arms 13a and'13b, extending at l righ-t ang es to each other (Fig. 4). The

l arm 13a is provided with a projection adapted to engage the stone. ach jaw 13 operates in a recess 14 in the chuck-slide 10.

15 is a plunger pivoted to the center of the arm 13b and operating in a recess formed in slide'lO.

16 is aplunger spring normally exerting an outward pressure upon the. plun er 15.

17-17f17h17 are tie rods pivotal y connected to the inner extremity ofthe arm 13b and'mounted to slide in the chuck-slide 10.

18 isa tie rod spring, normally of less strength, acting in the opposite direction from the plunger spring 16. n

19-19-19-19 are withdrawing rods pivot'ally connected to the .outer extremity of the arm 135, and carrying at the opposite end a block 20, traveling in a groove 21 in the outer surface ofthe chuck-slide 10, and projecting slightly above the surface thereof.

22 is a bushing between the chuck-slide 10 and the holder 9, and is secured to said holder (Fig. 6).

\ 23 is a sleeve rotatably supporting the chuck-slide 10.

24 is a transverse groove encircling the chuck-slide 10 u nderneath the sleeve 23.

25 is a pin lcarried by the sleeve 2,3 projecting into and engaging in groove 24.

26 is a slot in the top of the chuckholder 9.

27 is a post carried by the sleeve 23, proj ecting through slot 26. i

28is an abutment at .the lower end of the slot 26. l y

29 is a micrometer adjusting-screw mounted in the abutment 28, adapted to be en- 3() is a pivot post carried by. the sleeve projecting through slot 26.

31 is a 'reversing leverv pivoted to the holder 9 and engaging at one end the post 30.

Cit

32 is a. reversing yoke provided y'ith tvo ernis 32a :ind 335D, adapted to be engaged hv the reversing lover 3i.

t 33 is e reversing shei't 'passing through one eide ol" the heed es a. pivot or these Vside members (Fig. 2). The re'vr-nsing yoke 3? is secured to the outer end olAv the slnrit 33.

34 is e lever secured to the inner end of the 40 indicates e trein. of gears connecting' shaft 89 to shaft 2.

4l is a gearshelt passing through heed 5 and holder 9, and acts as a pivot-for these parts, Corresponding to the shaft 33 on the opposite side (Fig. 2). Y

42 indicates :i trein ol gears :ind ing transmitting motion from shaft shaft Lll.

4S is a reel;y on the Under side of the 23 (Fig. 6).

4 4 is e. pinion engaging 'reelr l5 find operated by the shaft el.

45 is e reduced extension at the rear elE the Chuck-slide 10.

46 is e ehuel; reteliet end Ll? is e delenl' ratchet, both splined on the extension and capable of longitudinal. movement thereon.

4S is e ehucli spring between th ratchet 46 end the chuck-slide 10.

49 is :in adjusting-screw inounteril in the holder 9 in line with the extension 45, rind is adapted to adjust the tension o'l" the spring 48. l

- 5() is e pmvlpivotelly mounted on the oesvl carrier 51, carried by e brziolret on loleor S).

:32 is e'piwl spring norn'ntlly `exfriing e dmi'rnVnrd pressure on the pew'l Carrier 5l.

53 isn. pewl wedge carried by the sleeve '23, sind is adopted to engage the peel carrier .54. is e spring-pressed pin e rried hy the holder 9 and normally'engaging the pareil 5G.

is e spring-pressed pin carried 'by the holder Q and adapted to engage the detent .rote-het 47.

5S is st of the holder 9 :in d eden the hloel; 20. f

5'? is e Sprinr)resend doe :it the lower extreinittv nl iie lever 34, end 'is adopted to enL gege 'the double .incline 5&3, on the Vheed 5 (Final). M

59 is e sniinemjressed retaining-'pincarried by the holder @sind adapted to ongagoin n. recess in eludir-slide l() when the eeinevlnis mede e, complete revolution (Fig.

sheit- 38 to sleeve e cinici;

onder; mounted on the inner side ted to he engaged by :nid holder Q, .fin/d acting moved in eitlror direetion, the dog gredrr G0 isn retaining pin herrie-:rl hy the heed 5 und is dented 'to engage in e. suitehle recess h holder 9* wh il. seid holder hes heen.

n* intel or 'vertirel position.

e' lori; :n lited to secure the holder Q zo l'irnily to the heed 5, when the holder 9 hns geen. vple-.eed it the grr-roner mig/:le (Fig. l).

The operetion is es follows: The holder 9' is released from the hoed 5 hy the operation of 'the look 6i and is tn fned on its 'pivot point 75 until in vertical position,- when the pin 60 -Will become engaged and hold the seme from further movement. The jaws .i3 :ire then pressed beek and the stone to he out, having been secured in the proper manner in tlielRO holder l2, is placed inthe recess 1l et the lower extrernityol' the elruekfslide 1U. The' jai-Ws 13 are then released. 'lhe plnnf r l5 pressing downwardly :ind the tie rods 'l 'I pnlling in the opposite di1ection,\\ill :ret :is i lul-4I 35 erom and Cause the arms 13a ol the iewsto `engage the stone end hold the seine. in place. The angle et which the stone isro be'eut lnlv-v ing been determined, the holdinl il is then md5v Kiusted et snch angle, hy providing` e seele on either the heed or holder i)7 end secured hy the looli (il. ,lfrwerthenlzeing applied lo shelt- 2 `will censo the wheel 3 to rot-ite y:ind et the serine' time hy ineens of the reni trrrlg the sliding heed will he nsriprocated, thus movingI the stone hee :ind io'rlhoir the rotating' wheel 3, pror'lueirL g e. more sat'islziw' tory cuttingnotion. As the stone ground oli, the chuck spring 48 feeds thel druck-slid e l() downw idly through the bushing $29,' le@ which is secured to the holder Si, ind il tde sanne 'time carries the sleeve 23 with it, rintii the post 27 engages the niieronieter screw "22)," the letter having' heen previously adjusted' (lnig. 6). "ilfhen the downward movement 105 of the Chuck-slide 1'0 ceases, the post 3() will have caused*thepivotlerer 31 'to "have 'en-1 gzigjed the :rrr i 32 of the reversing"yoke 232 and' turn the jjeke 32 lmckwfirdon the slniitf 33, thus tilting the arm 3l, Carried lherel'rv im 'in the opposite direction. The linie l'lwini pivoter@l to the 'er1ri'34,wvill then cause-tin eliil'eh rerried by the erin 23o, rohec'oine engaged und newer will he tren niiltnd lfrom shel't through the gearing 40, shafts ISU ein! llo 38, through the tre-in ofgrestrsfrnd shefts Liv.,

to the geel' .Sheltie-l, whiehoperates pinirmlr` 44, engzigring tl-ieraeli 43,'"21nd withdrees the. c-.huelslide fron-i'engsigenient #with wheel :if (Fig. l). during-the"upward 'movementoi.-120 the chuck-slide the vpost 30 wvillf-zrnse the pivot lever 3 lfto fturn upon its ifi-vot' er V gege the erin 32h of the reversingzyokox thusy ihrowing;l the 'lever Serin .the oppernt direction and disengaging theeluteh 51,125 ie a spring-'nressed dog'. on :the `lower my treinity` of t roer-1n otethe. lever-.Bef end f adapted to eng-:ege the double. incline the heed ifr'thereversing; yolrel), f

'rides' upone inclined side `until-the" top is i reached 'fTh'ere'it-,is necessary only to im 'part av slight movement to the reversing yoke `to cause the dog to-fengage the inclineon the "oplrosit'efsideyand the spring in the arm 34 v 'wi thenfcause the dog to ride down upon said incline -an'd positively throw the clutch ,the wedge- (Fig. 6).

' to said ratchet and as the chuck-slide V10= moves downwardly; the pawl-spring 52 will 'I intoI or out ofconn ction, as the case may be.

Atftlie-'same'time-t he reversing mechanism isfoperated*-byrv the lchuckJ-'slide'lO on its upward travel, the pawl wedge53, carried by :the sleeve 23,'will 'engage the pawl carrier 51 andcausethe' same to ride up the incline of As the pawl 50 engages the chuck ratchetv 46', this upward motion of the chuck-slide will cause a partial rotation withdrawthe pawlv and the springressed pin 54 will cause the pawl to engage t e next tooth. The detent ratchet 47 being carried by the same member as the pawl 46, will rotate at the same time, and the pin55, engaging 'the ratchet 47, will prevent a reverse movement when the pawl is disengaged. As

' the jaws 13 are symmetrically disposed about Ithe tapered lower end of the chuck-slide 10,

it would necessarily follow that in certain positions of the slide 10, one of the jaws 13 would come in contact with the wheel 3, as the chuck-slide descends. To engagement,the sto -lug 56 projectsinto the path of the chuck-slide 10, between the bushfy ing 22 and the sleeve 23, and as the slide moves downwardly the block 20 of the aforesaid jaw engages the stop-lug 56, and holds the jaw against relative advancement asthe chuck-slide descends (Fig. 4),' It is thus seenthat when the holder is set at the angle desired for the facet of the stone, the amount 'of stone to be cut or Aground off is determined, the micrometer-screw 29 is set accordingly, and the machine put in motion,

the above operation will be continually re-,`

That is, when the stone has been roper amount, the reversingaction will e set in operation, the slide will be withdrawn from the olishing wheel, and a partial rotation wil be imarted to it by the awl 50, to present a new ace to wheel 3, tie reversing mechanism disconnected, and the slide will be againfed downwardly by the spring 48, and the under jaw 13 will be held from engagement vby the screw 56. After the last facet of the stone has been cut, the pin 59 will engage a recess peated. ground down the in the chuck-slide 10 and hold the latter y away from the wheel until., the stone is taken outand replaced.

The reversing lever 31 normally would engage the arm `32" of the yoke when the holder 9 is being turned upon its axis to the hori` zontal or verticalposition, and is, therefore, made of two p.\rtsh1nged together, so that reventl this the 'yoke end `ofthe leverm'ay beturnedon the-hinge totheposition shown in Figs. 2f and 3, when it is desired to ychange the position ol the holder-9,'andfthen whenlthe'holder` 9 has been adjusted for cutting the stone, the hinged part of the reversing lever 31 is returnedl to its normal position between the arms 32at and 32h, as shown indotted lines in Fig. 2.

, Vhat I claimI is- 1. In av machine of the character described.

a frame, a grinding wheel, a, stone holder adapted to co crate therewlth and means vcontrolled by t e vfeeding movement of sied holder to withdraw and rotate the e 2. 1n a machine of the character .ii/e. tribe-d.,

a'frame, a'grinding' wheel, a' 'stone holder 'adapted' to cooperate vtherewith Vand means controlled by the feeding movement of saidholder to automatically withdraw and rotate the same.

3.4 In amachine of the character described, a frame, a grinding wheel, a stone holder adapted to coperate therewith, means to automatically feedand Withdraw said holder and means controlled by the withdrawal of said holder to throw .the feeding mechanism into operation.

4. ln a machine of the character described,

afra'me, a grinding wheel, a stone holderv adapted to coperate therewith, v'means to fee controlled` by the vfi-thdrawal of ,said holder to rotatethe same andto throw the feeding mechanism into operation.

.` 5. In a machine ofthe character described',

and Withdrawsaid holder and meansa frame, a grinding Wheel, a stone holder adapted vto .cooperate therewith, means' to feed said holder, means controlled. by the feeding movement to withdraw said holder, and means controlled by said Withdrawal to again throw the feeding mechanism into operation.

6. In a machine of the characterdescribed, a frame, a grinding wheel, a head reciprocatf ing upon said frame, a stone holder pivotally mounted on said head, means to independently reciprocate said head and holder, and

means controlled by the re'ciprocation vof said holder to reverse the movement thereof.

7. In 'a machine of the character described,

a frame, ahead, a chuck-slide reciprocating ,the holder adapted to engage one of `9. In e machine ofthe character described,

`a. frznne,I e reciproca-ting chuck-slide, means to reciprocate seid slide, and means operated by the movement of the slide in one direction to partially rotate seid slide.

l0. ln e machine of the character described, a frame, :i reciprocating chuck-slide, means to reciprocate seid slide, chuck jews carried by said slide, and means to Withdraw one jew member from its o eretive position nponvthe movement of the s ide in one directionv l1., ln e machine of' the character described, a frame, e, sliding heed, means to reciprocate seid heed, e chuck-holder pivotelly carried by seid heed, a sleeve moveble lonffitudinclly in seid holder, a chucksli e, mounted within seid sleeve and rotatable therein, means to independently reciprocate seid sleeve, jaw members, members adapted to move longitudinally in seid slide and nivoted to seid jew'members, means carrier by seid movable members upon the downward movement of the slide and disengege seid jaw member from its operative position upon 90eme further movement of the slide in the seme direction.

112. In a machine oi the character de scribed, e frame, e, sliding head, means to reciprocate seid head, a chuck-holder )ivotelly carried by seid heed, e sleeve moveJ le longitudinally in said holder, e chuck-slide rota,- tably carried Within said sleeve, pivoted jaw members carried by said slide, means to feed the sleeve and slide in one direction, a reversingl yoke, reversing,` means operated by said yoke end adapted to engage said sleeve and move seid sleeve and chuck-slide in the rotate said sleeve.

ARTHUR HENl YS.'

Vitnessesz R. C. MITCHELL, LANGDON Moons.-

oyiposite direction, a post carried by seid Y 

